Electrical switch



Dec. 6, 1932. K. J. JUNGHCVDLM ELECTRICAL SWITCH Filed Sept. 18, 1929 60 l p 1 I 7 O E AZ r 0 J l /1 v 7W \INV b. ,f v m 6 WOL I f IApplication 1 ama ;se men; in 393317, a i irs eaeiiafin19;1923; i I:inyent on'relatesto electrical switches 'Onefarin, as 9, of each pair ofarms 9 and more particularlytoyeleotr calswltohes s formedwith miner lprojectioinas inc'ontainedi'n boxes and comb ned with plug icatedbydotted lines in Fig.f3,-to which fuses' ofthe kind in. which thefiisjeholders, "i'con the notation ofiwhich the twoloonnectionconthreadedcontact sleeve 18 toreeeiye the fuse 1 ftalcits of each fusejcan' be cntont,*and the insetsplu g-8J .ji g thus renderedfdeadl*Inthe hithertoknown if The handle GEis rOVided-With an arm 19constructionsofthisfkindthe fnsescannotbe havin -at its; "as, end alateral projectiOnEZO p p I I g V tact sfclrew'lifor the fuse plugissecured. arefsecnre'd to a -rotatably mounted part on flTh'eg otherafarrn'; asfilojcarries an internally 5 a cutout, orfatleast not entirelyentont,before "to"co pielat with a "cain shaped portion 21 0 thellidhasbeen opened,- so fthat iit,lis possible of the lid 2 infsiiliafway astopreventithe i td touchthe fuses while theyarestiH con-- beingopen'ed'aslong as the'confidnoting current. 5111'accordanceavithg the tacts llarein engagement withthe rigid present inventionthe fiiselholdersar'em0unt-' contactsbl2. VVi'th' the contacts thus'olosed ed ona;shaftindependent;oftheglid of-thef thecuirrentlpasses through the plugfuses 8.

1 7 box which shaft can. be turned by mean'sofa' To switch" ofitliecurrent the handle 6 should handle located I externallyvof thebog:finfsiich be movd; in the direction indicatedby the rrow in Fig.2;"Thiswill cause the shaft o 'rjotate in the direction of the arrowshown mannenthatthei'fnses can berenderedfdeadf beforeitiisnecessary,tofdpenthe lij f j p 9 0116 embodiment ofthe invention is 11 ins; itritdvfin wthe" ecompanyingdrawing in "and s'ec'ondjaryfcontacts of the*plug fuses 8, i Figure 11]is a front'viewjof thelbox, Onlyafte'rfthehandle has been rotatedfto with'partof the front Wellandli'dremoveid-"to siiohanextentas to bring the projection '1 "show theinteriorfi'of theboX. Eig NZis aside p- 'ont ofthe-,p'ath ofi'the cam 21the. lid can'be Z elevation ofrtheboxlandFig.

' eferring to th a p gar-stag. time @5111 'thaiia mnstbeclosed beforethe handle can indicates .ab'ox having a= lid 2 hinged at 31batsmen-back; 'again tof close the contacts Sgandheldin c'losedistatebyas ewfor thef-lik e l 11*, 12. I. p k as shown atJLJRtatablyinioiinted in jthe whatlclaim is: I

l 1 sidewalls? ofthe box lisflajshaft 5iwhichcar 1,, An electricalswitch, comprising a 156k fries fa handle fikoutside jone'jsideWalLQThehaving a lid to permit accession to the" in i shaftfi is of'areotangnlar crosssectionalong terior ofthe box, a shaft rotatablymounted W 5 mostof its 'length; as shoWIifat'fZto receive; said-box andprojecting ith one end outs i I donble pole switchgcontaetsfandfholderstori sidethebox, ahandle attached to said pro- 1 associated pl ig, fnsesfser'ving; assafety fuses. jecting end, bus-bars in said box extending7 Fordejachplug fusejS th'e shaft "jcarriestwof substantially at. rightangles .to said shaft, 7 arms 9andf10shapedgatiheirireeiends as primaryand, secondary rigid contacts seknijie' (iontactalltdengage rigidcontacts 12 cured to said bus-bars and corresponding soasiton -formadoilble'fpolefswitchSforeaOh movable contacts carried by said'shaft, inj y e-plng fnse .""The'rigidcontacts12Iarein turn ysuc h a 'Way thatboth the primary and the jeonneetecluto preferably verticallyiextendingsecondary contacts will positively be broken Lhnjs-barjs "13-;to7 hichth'ein'coiningfand out-jrsimultaneonsly by rotating the shaft eachg'oingco lductors:(.not}shown)l*may be con-p pair of movable contactsbeing arranged to p ;,x;nected iby bindingscrews 14, FThe boxmay'freeeive a contact screwand a plug for fuses, 1.11be'formecllwitliopenings, as 15",{16,at its bot! respectively. Y

tom andtoptojenable'a pliiralityjofboxes to 2; Ane1ectrical switch,comprising a box beplaced in af verticalrow gand the bus bars having alid to permit accession to the interior itheindividnalboxes beconneetedtogether iofthe box', a shaft rotatably mounted in said 3 ,,ther by 'openingbo'th the primary is'a crossese'cf-tQopenedfto ,renderltheinteriorof the-box ad ""cessibleforii spection or repair) Similarly, 3

box and pro ec ting with one end outside the 7 7 a box, a handleattached to said projecting end, bus-bars in said box extendingsubstantially at'right angles to said shaft, primary and secondary rigidcontacts secured to said bus- )bars, corresponding movable contacts se-W cured side by side 'to said shaft and'all :hingedlyv connected 4 fuseplugs carri'ed by the switch-bladef-sta-i v .e

I I tionaryi contacts within wthe chamber of the box, contactmemberscooperating therewith *andcarried by theswitch-blade, ahandle itI membercarried by the switch blad e and 10- I directed to the same sideof the shaft, each pair of such movable contacts being arranged, i toreceive a contact 7 or fuses, respectively. I

g 3. An electrical switch-, comprising a boxi; 5 having a lid hinged tothe box to permitac cession to the interior thereof, a shaft rotat screwand a plug ably mounted in said and pro'ect' with one end beyond oneside Wall 0 the handlefs'ecured to said projecting end, busiba'rs insaidbox'extending substantiallyat V Q 7 right angles 'to said shaft, primaryand sec- .1 ondary; rigid contacts secured {to alternate I bus-bars, sur d o corresponding movable" contacts contact screws and plugs forfuses, and means to prevent the lid from beingopened except in thefdead'stateof the fuses;

V LThe combinationf with] a rotatable switchbladefof an electricalswitch, said a I switch being disposed in the chamber of a 7 fr; box,having one-side thereof. open, a cover cated outside the box, an ar saidhandle member, arcuate cam sur'f'ace carried by the Cover and married by,norrnallytmaintaining the cover-closed,:said arrn and caln' surfacebeing positioned whereby when the switch-blade is rotated to'posi I vtionthe fuses adjacent the-box openingsaid ,3

cover will be released.

Iii-testimony whereofl havesig nedmy 7 I "ci ema. i i

said shaft side by side and all directed to'the same" side of the shaft,,said movable contacts, being arrangedlto receive to one sideof saidbox," i

said arm overlying an it

